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54-a=12(a-5)
We simplify the equation to the form, which is simple to understand
54-a=12(a-5)
Reorder the terms in parentheses
54-a=+(+12a-60)
Remove unnecessary parentheses
+54-a=+12a-60
We move all terms containing a to the left and all other terms to the right.
-1a-12a=-60-54
We simplify left and right side of the equation.
-13a=-114
We divide both sides of the equation by -13 to get a.
a=8.76923076923
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